On 08/04/2013 02:29 AM, David Bernier wrote:> On 08/04/2013 01:04 AM, David Bernier wrote:>> In a periodical that listed French authors by name, with a list>> of their works, I found an entry for:>> Haros (Charles) employé au Cadastre de Paris.>>>> This is around 1802, after Haros wrote the general>> public book or booklet:>> "Instructions abregees aux nouvelles mesures" (metric system).>>>> The periodical listing French authors was updated>> from time to time to show new books, new editions,>> change of job, or date of decease.>>>> "La France littéraire contenant les auteurs français de>> 1771 à 1796, Volume 5", 1806 by Johann Samuel Ersch. [ with additions]>>>> At Google Books:>> < http://books.google.ca/books?id=BuwOAAAAQAAJ > .>>>> dave>>>>>> I think this below seems very good as a reference on the employees at> the Bureau du Cadastre, where Prony's project of a "great table"> of logarithms was housed around 1791-1802. In the end, the> "great tables" were only in manuscript. Also, the Bureau du Cadastre> was dissolved in 1802 (under Napoleon). It seems the "great tables"> were something of a white elephant, just too big ...>> by Jean Louis Peaucelle:> "Personnes ayant participé aux travaux> du bureau du Cadastre de octobre 1791 à mars 1802",> April 2011.> Peaucelle:>> Charles H. Haros, mathématicien au bureau du> Cadastre de octobre 1794 à mars 1802.>> -->> I learnt that Haros is listed as a calculator in Connaissance des Tems> (Nautical Almanac of France) for the calendar year 1805 (planetary> positions, moon alamnac, eclipses, etc. for A.D. 1805). In fact,> I downloaded Connaissance des Tems for 1805. Lalande Sr. was the head,> with Lalande (nephew) on the team.>> Connaissance des Tems was published by Bureau des Longitudes.>> Jean-Louis Peaucelle, who wrote the April 2011 list referred to> above, says that Haros moved from the Cadastre to the> Bureau des Longitudes starting sometime in/after 1802.>> Peaucelle mentions sources like this:> Sources : AN F/1bI/44, ENPC Ms 2213 (1) et (2)>> AN : archives?> Ms : manuscript (or non-published document ...) ?>> Cf.:> peaucelle2011collaborateurs.pdf>> With Google search, keywords => peaucelle2011collaborateurs.pdf cadastre locomat.loria.fr

Scott B. Guthery, wrote a book,"A Motif of Mathematics: History and Application of theMediant and the Farey Sequence"on Haros, Farey series,computations of tables around 1800 and after in France,Britain, etc..

I didn't find any typos in French names.[ I inadvertently found en electronic version somewhere ].